The town was located to the east of Lake Petén Itzá and was said to have been farmed by the inhabitants of Nojpetén, the capital city of the Itza kingdom.
Don and Prudence Rice have disputed the location of the Yalain capital being so far east on the basis that it would be too far for the inhabitants of Nojpetén to tend their fields.
[7] When the Spanish conquered the Petén lakes in 1697 under the command of Martín de Urzúa y Arizmendi,[9] the Yalain were initially cooperative and assisted in the capture of the king of the Itza.
[10] Soon after the conquest, the Yalain fled their settlements to avoid foraging Spanish parties that were abducting Maya women for "service" at their barracks.
At this time, such was the hostility that was felt towards the occupying forces that the inhabitants of the Yalain settlements preferred to burn their fields and break all their pottery rather than leave anything for the Spanish.
[13] At Ixlu the Yalain pattern coexists with distinctive Kowoj architectural arrangements in other parts of the city, perhaps reflecting the contested nature of the site.
[5] The site of Yalain, which has given its name to the polity, is located approximately 300 metres (980 ft) from the shore on the northwest side of Lake Macanche.
The site contains a number of small residential groups that have been dated to the Classic (c. AD 250–900) and Postclassic periods.